Viessmann Flue gas system Installation Instructions Manual page 21

Routing through a duct (cont.)
Fitting an inspection piece
Note
Trim the flexible flue cleanly at right angles.
20
5. Push on spacers
area of flue (bent ends towards the
3
flue gas flow).
6. Position line ties
ring of spacers
5
1. Push union onto flexible flue
1
2. Place retaining ring
groove of flexible flue
3. Position retaining ring
groove of flexible flue
4. Connect union ring
piece .
8
onto the corrugated
5
supplied around the
6
and tighten securely.
.
3
into the second
2
.
3
into the first
7
.
3
with inspection
1